About: http://webisa.webdatacommons.org/413463545

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Although the matrix 14 may take any form, such as circular or even toroidal, it is shown as being generally in the shape of a rectangular parallel-piped having opposed planar surfaces 18 and 20 between which the holes 16 extend.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca